``One Flew One Flew Over the Cuckoo's Nest'' Jack Nicholson's powerful performance delivers a timeless Arrival

Supporting characters who thoroughly prepared for their roles over half a year

The preparation period is half a year. This allows them to take their time and carefully select the actors they should hire. At the audition, practical abilities were tested, and as a result, many talented actors who had never appeared in a movie were discovered. For example, this is the first appearance of Danny DeVito, who later became famous for his role as the Penguin in `` Batman Returns '' (1992). Christopher Lloyd, who would become a household name 10 years later as Doc in Back to the Future (1985), also left an unforgettable presence with his familiar googly eyes.

They were tasked with living with and thoroughly researching actual hospitalized patients in accordance with the medical conditions of their respective roles. The important thing here is to accept them as ``real people'' and absorb their way of life. Indeed, Milos Forman's style of comedy never makes fun of the characters or makes fun of them. This came from this kind of attitude.

“One Flew Over the Cuckoo's Nest” (c)Getty Images

Furthermore, as the actors lived in the hospital, it gradually became common for them to remain in their roles 24 hours a day, regardless of whether they were acting or not. When Jack Nicholson finally arrived on set, no matter how friendly he tried to talk to his co-stars, none of them would get out of their roles, so Nicholson wondered, ``What the heck are those guys?!'' Apparently, he couldn't help it and ran away from the scene.

Jack Nicholson's amazing performance that will go down in history